Ments



H. BOCKISCH. AuoNiAUc MUSICAL INSTRUMENT.

ArPLICAYIOH lLED DEC, 2. I9l9.

dan

fil/FI u attorney l1. BOCKISCH.

Auommxc MusscAL INSTRUMENT.

AYPLICATION FILED UC. l2. 1.9!9.

anotan' H. BOCKISCH.

AUTOMATIC MUSICAL INSTRUMENT.

AvPLlcAloN mw DEC. l2. 1919.

1,431,361 Patented Oct. 10, 1922.

4 SHEETS-SHEET 3.

A Maj-13a?,

H. BOCKISCH.

Auommc MUSICAL INSTRuMiNI.

Patented Oct. 10, 1922.

u y nvanto'c amr/wif, @www 4 SHEETS-SHEET 4.

\r TVQ@ 'ments, as organ pipes, for exarnp Patented Oct. l0, 1922.

UNITED' sTAjrss PATIENT .iio-teilt:a`

vHummer:reclusos, onronsnxnmsm, New venir, ssinbny SSIGN- MENTS, To wEL'rE-MIGNON CORPORATION. GNEWYORKSN. Y.; A eonrommgy OF NEW YORK.

..AU'.l'OlLTIG` MUSLCAL INSTRUMENT:

lnnlieaton filed December 12, 1919. v Serialll'o. 344:31@

To all whom it may concern:

Be it known that l, HEINRICH Bocmscn, a citizen of' Czecho Slovakia, residing at Poughkeepsie, in the county of Dutchessand State of New York, have invented certain new and Vuseful 'Improvements in Antomatie Musical Instruments, o1 which the'following is a specification. Y

This invention is a particular embodiment of afmeohanism wherein there is a plurality of series, or scales, of tone-emitting elele, one of said series being for toneshaving a. dif"-4 ferent quality than the other, as pedal and manual, for instance,togetl1er with recordcontrolled vmeans for selectively causing the operation-of any oneor more of the toneemitting elements of eitherseries alone, or 0f any one or more of theellements of one series in combination with any one or more of -the elements of the other series.

"The embodiment illustrated in the accompanying drawings comprises many parts andc'orrelations of parts which are generically similar to what has been shown, described and claimed in my patents nun bered 1,197,573; 1,197,574; and 1,197,575 issued September 5, 1916, and also in my applications for patents numbered serially 339260 and 339261 respectively, filed No vem'ber 20, 1919.

There is a particularly close relationshi between the embodiment herein'illustrate by way of example in my aforesaid ap lications for' letters patent identified as Celso A and Case B respectively, the substan- Atial differences being in those parts of the switching,r mechanism for the pedal and manual scales entitled prinnatry operating pneumatic elements. together with the'connections between'the sameand the circuit closing'elements, the tone circuits, and also in the details o' the pneumatically operated`loclring mechanism.l

Thev drawing 0f Case A hereinbefore referred to illustrates an embodimentA of my invention wherein there are two Series of separate bellows, one for the pedal scale and lows having its movable' bdardpivoted withscale; each bellows Vshaving',E a'- projection movable into themath-of 'the:correspondin,cr circuit closing; memberto thereby hold said nunnberl against movement from the 'position to which it wasset until: the .corres ond-ing tone duethas been'closed, even thong a control duet-meanwhile-be opened or closed.

The drawing of Case B. herenbefore reterred to illustrabesean embodiment of my invention `wherein* 'therf are -two fseri of separate circuit closing devices, such as levers carrying the circuit closin members, one series4 for the pedal scale, an the other series .for the manual scale," together with operating .pneumatics respectively common to the 'series of leverspand? connections between the 'pneumatica `and the' -series of levers, the connections-` including anf operatmg member'l commonV to-feaeh-iseries of levers and resiliently-rsupportecl stems connecting each lever with its'common ov'erating member.

In the present vinventicml have provided in-lieu 01Ey the partieularembodirnents referred to in"Case,A andl'fCaseB re spectively, a seresof circuit closing devices, such as levers for each scale, each lever havingr a. circuitl closing member, and a. membranous means foieach series of levers, the membranous means being connected to the respective levers by stems which engage said means and'levers; and in lieu of the locking bellows and their 'projections illustrated in the drawings of each of the `foregoing applications, the present embodiment employs a series of locking levers and membranous means and stems similar to the membranous means land stems employed to operate the levers which carry the circuit closing member, each of said locking levers having a projection to act as a. stop for the corresponding 'circuit-,closing lever. Further distinctions "between the present embodinientand the embodiments illustrated by the drawings ol the foregoing applications for patents nre :is follows:

Iii the embodiment sei*l forth in this application the stems which operate the respective circuit closing levers are in position to be moved by the membranous means-.but are disconnected so that each may be ca.- pable of independent movement relative to the other. Also the Astemsiire operntedupon directly by the turn directly operate the levers.` orco'verl these stems of the circuit closing und are loosely connected to the levers.

In thedrziwings illustratinga preferred embodiment Iof the invention, ,and wherein like characters. ,of, Arefeicnce `denote'-corre.- sponding parts in the several :il

Ficure 1 is a diagrammatic view; of n compglete mechanism :including the improve ments which constitute the present .'inve-n` tion Fig. 2 is a `perspective view, part-1y in section, of a part of. the switching mechanism of the n ieiiiial scale,4 tot'qethcrl with locking vulves which control the air tensions in 'the channels adjacent the membranes., which operate the locking elcmentsnndwith electromagnets for controlling -tl1c;nir;tens1o to the membranes forfon'erating 'the-locking valves.

Fig. 3V is si ,vert-ical;sectionA through the switching mechanism: 'showing 'correspondinof switching elements 'of-the innnunLend peldal scales y 'and their cooperating loclnin elements, together with thc-common contro valve for the locking elements and thc maig-l net for controlling the valve, `the'parts-lmino shown in their'rehition when the correspon ing `tone duct was opened before either control duct and which relation is annintnin'ed until seidtone ductis closed.

Fig. 4 is a section on line 4-4'of llig. o.

. Fig. 5 is ai section on line 5-5 of Fig. t3'. ,Referring to F ig. ly of the-draivings:

D is n tracker board liavingtheniouths of tone ducts 12 common to :i plurality of scales, as a manual scale and pedal senl'e, for example, and also havim.r the -iiioiiths of Control ducts l und 2.

14 design-.iles n primary` tone vnlvevifhose stem is connected to anicmbrane 1? mounted between a. chamber 13 and asile-tion conduit 13, the `vzilve 4itself bcing ,moiinted in va chamber, 14, having a 'suction ,port 2O and an atmospheric port 19. In practice there is one of these valves, membranes, chamber 13, and chamber 14 for each note common bo both scales, 'and additionaly valves, mein branes and chanibeisior each note-vrwhich is to be :plziyedin the innnual scale only-,for example. As this invention is concerned only with those notes which are common .to n plurality of scales, the description will membranous nieaillfand in and lock-i ing levers are movablcin, aistraightline:

be confined to the parts by which the sounding of the notes in either scale alone, or in both scales together, iin any combination called for by the musical composition, is permitted, notwithstanding the use of prinuiryltone valves and tone, to both scales. y i the several chambers 13 and 14'* are, in pmetce prefmhlyemboded in e chest (a ses tion of whichA is shown at K)`ciillelfprimy tone chest, and 'that the conlr'iitf1.3, also in Vscid ,niftyI be commento 'the' several valves 14 and membranes 17 and suitably lconnected within means for attenuating the iiir therein. The du'cts 12 are the chambers 13, respectively, andserve to admit atmospheric nu'. to the membranes 17 tothereby move the. primary tone valves 14 to c1ose..the1,atn1ospheric. duets 19 -an d.ppen the suction-.ducts A. 20, Each section. of f the connected to chest-'.Krlso has a..pneumntic g provided withiriifisiry` circuit closers g2, res ctirely, for c osing tone circuits'hereina 1 fully sebito'rth.

--Freind .ti designate secondary 4operating prieiimatics,. having. suitable connections, suehas indicated at F -and HQOrcXa-inple, with thestems c of valves (not shown) in thennnnualgand; pedal wind chests as in my patents and applications v.for lpatent hereinbefore referred tof .In practice, there iS @ne pneumatic .F for. each-valve in thegmafnlal wind chest-section and one neumitic H for l chest section.

each .valve inthe pedal win t. Each pneumntcll is connected to a cham; ber The severelchambers 63; provided-1 in practice, :are preferably formedin e: secondarytone chest, le section of ivhiehfjs shown-at ,I. Similarl leach pneumatcH is Aconnected .to a chamber fand the several chambers 63 are preferably formed in a secondar tone chest.' a section of which is shown at,

rvEach chamber 63 is provided with a seco'n'elarytonevalve -70,andis formed with a l suction port'64 and :in atmospheric port 65.

The 4valves 70 areseverally moved .to close the irespective atmospheric ports 65 and open the respective suction erts-64 und thereby collapse thecorresponc ing pneumatic F or H by fadmittingnir at atmospheric pressure toi chambers 66 having membranes'-'I oonnectedto the valves 70. This air is admitted to seid chambers 66 through ducts 69 .and theseA ductsvare opened =and closed by valves 68 carried'by the armaturesf, In. of electroinagnets f and it, which are included in the tone circuits` hereinafter fully set forth;

'Ihe control ductsl and .2hlerenbefore reieri-edito respectively lead toch'ambers 3j and 3 .formed in .primary control members J and JQ. The member 'J also has c sucton chamber 4.,j.a. -valve 'chamber 5, a suction port 6, en atmospheric port 7, a valve 8in the chamber 5 to control said ports, a. membrane l9, mounted between the chambers 3 and '4 and connected to the stem of the valve 8, and a pneumatic c having connectonwiththe valve chamber 5, through a '5 port 10, and provided with a circuit closing member bs. The member J does or may embody the same construction as member .l 3f being the chamber connected to the duct 2; 4 beingits suction chamber; 5 its valve 10 chamber; G and 7a its suction and atmospheric orts, respectively; 8' its valveg 9l its mem rane; and a its pneumatic, having connection with chamber through port 10* and provided with a circuit closing memhere.

Thecircuit closing member ZJ closes a pedal control circuit, hereinafter described, the eiect of which is to complete otherwise interrupted tone circuits which control the playing of pedal notes, whereby pedal notes are sounded when ductl is opened.' The circuit fclosing member a closes a manual cntrolcircuit hereinafter described, which results, as hereinafter explained, in the interruption of the tone circuits to the manual scale.' when control duct 2 is opened,to therebyl exclude manual notes and, hence, duct 2 is opened along with control duct 1 t0 cause the sounding of notes in the pedal 3,0 scale-only.

E designates a primary operating pneumaticelement of a membranous nature for themanual scaleancl G a primary operating pneumatic element of a membranous nature for thefpedal scale. In this particular ein bodiment of the invention the element E is a long membrane for the entire scale, having--one-.o its-surfaces exposed to the air infn. 'channel O. This air is normally at atmospheric pressure, and means are providedfor changing its tension to less than atmospheric-under control of the primary control member J', through an intermediate mechanism which preferably includes a sec- '145 ondary control valve having a stem 25 and valve members or heads 26 and 27. These valve members in this particular embodiment are mounted in a chamber 28 having a suction port 29, an atmospheric port 30 and 50 duct 2A. .The duct 24 connects the chamber 28 and the channel O. The stem 25 engages a membrane 31 which separates a suc tion chamber 32 from a chamber 33. The latter chamber is connected by a duct 34 with '55 a passage 35, one end of which is open to between the suction chamber 36 and a chamber 41 having a-duct 42 which is o ned and closed by a valve 43 carried by t e armature 14 of an electro-magnet 45. This magnet is in the manual control circuit, which is opened and closed by the circuit closing member a and hence the magnet is controlled by control duct 2 through the primary control member J.

rlhe parts are so correlated that when the '15 duct 2 is closed, the circuit to the 'magnet 45 is broken; duct 42 will be closed, chamber 41 will be under suction through a. bleed hole 46 connecting chamber 36 with cham bei' 41, passage 35 will be in communication 80 with suctionchamber 36 and closed to the atmosphere, chamber 33 will be under suction through duct 34, chamber 28 will be in communication with the atmosphere, and ac cordirxgly, channel O will contain air at at- S5 mospherie pressure sup lied thereto through duct 24, chamber 28 en atmospheric port 30.

G designates a primary loperai. n'eumatic element for the pedal scale. 1s element, also, is of a membranous nature and preferably is formed of a longl membrane com mon to the entire scale. One of its surfaces is exposed to a channel N which con tains air at normally less than atmospheric pressure, and means are provided for changing its tension to atmospheric pressure under control of the primarv control member J. This means may lbe substantially similar to that alreadyr described with relation to the channel O, und is so shown; 50 being the 100 duct which extends to the channel N and is in communication alternately with a suction chamber 32 and with the atmosphere under control of a valve which comprises a stem 25 arranged in :i channel 2Bl and provided 105 with valve members or heads 29 and 30f;

31 being a membrane for operating the valve. arranged between the suction chamber H2 and a chamber 33, the latter4 having a duct 34* which extends to another passage 110 in which is mounted the stem 37l of a valve having heads or valve members 38 and 39, the last named valve being operated b v a membrane 40 arranged between a suction chamber 36 and a separate cham- 115 ber 412. the latter having a duct 42 whose mouth is opened and closed by a va1ve.43 carried by the armature 44 of an electromagnet 45 which is in the pedal control circuit. hereinafter described. opened and closed by the circuit closing member b under control of control duct 1 through the primary control member J.

The parts are so correlated that when the duct 1 is closed. the circuit to magnet 45 125 will he broken, duet 42* will be closed against the atmosphere, chamber 41 will be under suction, through a bleed hole 46, pas sage 35a will be o en to-the suction chamber 36 and close to the atmosphere, the 130 ailin duct 341 and chamber 33 will be attenuated, passage 2S will be open to suction chamoer 32 and closed to the atmosphere, and, in consequence, the air in duct 50 and channel 4N will be attenuated.

58 and 61 designate circuit closing devices, such as levers carrying secondary tone-circuit closing elements g and e. These levers are pivoted at 5S: and 61= respectively and are provided with means, :1s springs 59 and 62, to exert thereon resilient pressure in a direction toward the membranes G and E, with .which membranes the levers :1re conneef/ed b v stems 51 and 5l having heads 52 and 52 to enffage the levers. It will also be understood that the purpose of the springs 59 and 62 is to press the levers 58 and 61 to force the contacts g away from Wires c, c., and contacts e away from wires d d. The stems 51 and 51 are loosely e raged with their respective levers 58 an 6l.

75 and 77 designate pneumatically operable locking or holding lovers havmg rojections 7G and 7S which are movable into the paths of projections 76 and 78 of the respective levers 58 and 61. These levers .and 77 are respectively pivoted at 7:7* 'and-77 .and they are connected with membranes 79 and S0 bv rods or stems 79 and 80 which are loosely engaged with the respective levers and have heads T9 and 80 to contact the latter. The levels also have means, as springs 79c and S0l acting in opposition to the air tension exerted on the levers through the membranes 79 and 80 and stems 79 and 801 The loose connection of each stem 51, 51, 79 and SO with their respective levels, is preferably effected by forming the levers with openings and extending the ends of' the levers into seid openings. The purpose of the loose Vconnection is to permit relative movement of the levers and stems.

81 designates a channel from which extends a duct S1 having branches S1" and 81:. The branch S1 communicates with a chamber 79" beneath the membrane 79 and the branch 81c with a like chamber S0 bcneath the membrane S0.

It will be noted that the channel 81 has communication with the chambers S0i and 79" and, :1ccor lin,fl that if the air in channel S1 be rurelied or if it be at atmospheric pressure, it will similarly be rareed or at atmospheric prcssu re, as the case may be, -in both chambers 79d :rnd 80d. The channel Sl is controlled, to thereby control the tension of the nir in chambers 79 and 80", preferably by a valve which comprises a stem 8G having heads or valve members 84 and S5. In this exempliication, the stem SG extends through a port or channel S2, one end of which communicates with a. suction charnber 83 and the other end of which is open to the atmosphere VThis Avalve is operated by a membrane 88, one surface of .which is exposed-to the rareed air in the chamber S3 and the, other surface-of .which is-exposed to the air in a chamber 8'( having a duct 90, the mouth of which-is opened and closed by a valve 92 carried by the-armnture Sila of an electro-mngnet .91.;A bleed hole 'S9 conncctsthe chambers i3-and 87 with each other. VThe magnet v491 is energized when the corresponding .primaryi tone-valve 14 1s opened., beingin a circuit:hereinafter described which is-controllediby saidivalve, and accordingly is. primarily, controlled by the corresponding tone duct 12. Inv other words, the magnets91=nrein tone circuits.'

In Vpractice there 'is,oneci.rcuit closing dev-icev as the-lever. -=61 o'reach note of the manual scale :which rhns Ia.corresponding note 1n the pedal-scale, and one holding lever 77 for each lever land theseries oflevers 61 and .77 are preferably'mountedin-a. chamher which is 4underfnuclrion'fromaE-suitable source. Similarly :there` cisV one. circuit clos. mg deviceas th'c-v ever. fo'r each note of the pedal'scale-which liasa. corresponding note in the manal-scale, andfone holding lever 75 for each .'leverf58,fandthe series of levers 58 and 75 fare :preferably in a chamber which is under suction. .Intheid-iagrammatic view (Figil) the-tension chambers'are separately l being'marked M and L"respectively!andhown^as being in suitable boxesmr chests-M and There is also one magnet 91 for-each 'note which is to be played fimeither 'the manual scale or the pedal scaleone.lclngfvalve having valve members'BL'and 852for each magnetl and each pair of'lockn; of'holdingflevers 7 5 and 7.

The chamber M( contains ascnesol pairs of contact wires d; d. (indicated '1 and shown clearly vin F1glf2) t'o -be'hridged by the respective contact'elements-e. -These wires d, al are included in parallel electric circuits, called tone circuits, which also include the magnets' f, the correlation of the parts being such that when any pair of wires nl, d* is bridged'by the oo nding circuit 'closing element c, the circuit to the corresponding magnet f will be closed and said magnet energized when the corresponding tone duct 12 is o cned.-

The chamber similarly contains a. series of pairs of contact wires c,c' which are in parallel electric tone circuits which also include the magnets h, and whichwires, when bridged by the respective circuit closingclements g, canse the corresponding magnets h to be energized when the corresponding tone ducts 12am o ned. Y

It will be noted that when the channel contains air at atmospheric preure all the bridging contacts e will be in contact with their respective pairs of Contact wires d, d',

but ,it ,should be runderstood; that i-noneA '.of the ,tone .ducts areopenedalhof theiciz'-,

- cuits. will he interrupted. at'ithe [contact elements g.` In othenwords, while the-@bridge ing ieircu it closing elements. e; normally bridging relationnwith .their .respective ,pairs ofi-contact .wireS litri', the, tone circuits; are interruptedt until l thei 1corre'sponcling tone ductgisgopened. If, however, any 4 ofthe tone ducts-be openedy the t corresponding .pneu-i matics4 l" `will be deliated,l gthus` ciosmgcor? responding. 2 tone4 cireuits,, such as Vpresently traced, -for .cumplen-Which energize the i cor;

`responding magnets 91 and also. energize the i sequently .to chamber. 87;. if f lh'e. Naive drawing the m'e'mbers S4 and yS5 :nLoW4 riscs,; thereby cutting ofi' communication of the 1. duct-8l with i A.the suctionmhamben y 83' `and i opening communication of saidrluct with. the,.,at. mospherev Air at atmosphericpressure is now admitted to corrcspondingmhambers80 and '9:,.thereby raising the 'levers T7 .and 75. The several contact wires d areconnectpdibiv. wires mi?, fr. tothe respectire'terminals:g andithe several icontact ,wires d. are vconnected vby-Wires x=,'n: to one side off-.respectivemagnets f, theA other sides ofwyhich n1ab. nets are connected withthe nmmtnfehns hal; Y by wire w.

' Fromfthe foregoing the operation .will be understood to -be as follows:

; It will be remembered that whenmagnet 4o isfnot energized the duct 42 will be closed be the;valv'e 43, and `in consequencechanneb.

will be in communication with the gatmos-v phere.through` duct .24, :chamber .'28 .andi -atmospheric port 30. As ehambeM'gas under suction,=it follows that the lerer 61 Wil1 be pressed outward. and its circuit closmg :ele:

` ment le. will thereby be held ,in;engagement with the contact wires d,d. This. is the normal condition Vwith respect to the entire series -oflevers 6l, it being further remembered that there is one such leverifor each manual tone, and that all the levers are unf der the influence oi' a commonimembranc E, one side of which is exposed to the atmospheric air in the channel O.

Similarly` it .will be remembered that, when the magnet Al is not energized the duct 42 will be closed to the atmosphere, andduct 5U, and consequently channel N,

will ,be undersuction from chamber 32". As chamber Lis 4always under suction, itfollofwsthatithe springs 59 will be effective 4to hold the contact lever 58 away from contact .\viiesjc, c'. AThis is thenormal condition as to alLthe .levers ofthepedal scale, it beinggjurtlier remembered -that there is one suc-hgleveryffor 'each pedal tone and Athat each lever is 1under. ,eontrolof a common membrano G; one side of ,which is exposedto the airiin the channel N.-

This relation of the parts which has arbitrarilybeenjcallecl the normal one because .it isthe one `which most frequently exists in theioperationof the mechanism, results (l inthe, soundin ;of..the manual tones or e fectsvlvvhen neit er controLduets-opem-(Q) in ,the introduction'of pedal. tones -oleifects .when control ductl-is open,and (3) in the exclusiomof `manual tones oreiects and the sounding of1 pedal tones or effects onl when both controlfductsl and 2 are opene as it willfberccalled thatmagnet 45 is in a pedal circuit of. such nature that .when control duct Lis, opened magnetA 45? will be energized therebymhanging the tension of the air in ehannelN toatmosplieric, and thatmagnet flo is in a manual .control circuit of such nature that controlzecuctilQ is opened ma net l5 w' eener i ,t us chang' 0 thogtcnsionof theair ign channel O to lidi; than,atmospheric.` .1; The .jpedal .control circuitl may be traced diafrramatically upon Fig. 1 as follows lip rom e suitablesource ofv electrical potential, ,.indicated at l?, by bus bar X branch zu, contact wire m", contact b, contact wire m?, 1wire wf tothe magnet 45* and from said magnet to a negative bus bar Y, by Way of wire m5. 4 Ther-manual control circuit may be traced diagrammatically on Fig. 1 as follows ,Eromthe source of .electrical potential P, byr bus bar X, branch as', contact wire as, contact a, contact wire and wire zu" to the magnet 45, and through the magnet and back to. the source byYway of wire c and the negative bus bar i g Theo eration'of energizing magnet 45 to adjusttfe. contacts g into bridging engagement with contact wires c, c -to include pedal tones or effects with manual tones or eifects,.and similarlyr the operation of energizing magnet 45 to adjust the contacts e away from contact wires d, d' to exclude the manual tones or effects, occurs immediately prior to the opening-of the duets 12 for the notes to he aected. Moreover, the energizing of the magnets 45 and 45 ceases at the moment the duct or duets 12 for the tones to be affected, arc opened. The energizing of these Inagnetsvaccordingly are4 reparatory functions tending to result in t e inflation of membrane. G and the moving of all contacts y into bridging engagement with wires c,- c when magnet is energized and the moving of all of said contacts out of engagement with said Wires when the circuit to this magnet is broken; and, similarly, tending to result in the dellntion of membrane E und thus moving or' all contacts e out of engagement with contact wires d, d' when magnet 45 is energized and the moving of all of said contacts into engagement with seid wires when ,the circuit to the latter magnet is broken.

This tendency, however, is to be resisted or rendered non-eiective with relation to the contacts corresponding ro tone ducts which are open when either control duct is open, und vto this end the hereinhefore referred to locking 'levers 'l5 and 7T are employed and the levers 5S :md 61 are mounted to be severally held by seid levers, respectively. The operating means for these locking levers, as already stated, nrc controlled from the tone circuits so that the respective locking levers are maintained in holding relntion with rospect to corresponding contact levers' from the moment the corresponding tone ducts are opened to the moment they arc closed.

When tone circuits as previously stated in- (lu'de the magnets 91y thc illustrated connections are such that when a pneumatic g col' lapses by the opening of a corresponding Lone duct 12 the circuit to the corresponding magnet 91 mar be traced ns follows-from the positive bus bar X by brunch ra contact wire g', bridging contact g2, contact Wire g*1 wire w :incl wire rc1, to the terminal g of the magnet corresponding to the tone duct opened, and thence through said magnet to the negative terminal g" of the magnet n-nd hack to the ncgaiirc hns bar Y, by wav of Wire w". When this magnet is energize its armature 91 attractedr thus admitting ntmospheric cir to the duct 9U, end thence to chamber 8T, whereupon the particular membrane 88 which is influenced by the tension of the air in said chamber is inflated thus moving the corresponding valve to open channel 81 and dur-ly S1 to the atmosphere and cut oll' its communication with suction chamber 83. Air :it atmospheric pressureis now simultaneously admitted to chamber 80A through branch duct S1 and to chamber 791 through branch duct 81D. This results in the simultaneous inllzition o1" correspondinv membranes SO :1nd TF) of the manual und pedal scalest rrspcrlirclv, and cziuses the corresponding lerers T7 und T5 to be moved into the paths olf the respective corresponding contact carrying levers il und 58, thus holding the latter levers in ille positions occupied by them when [hr col icsponrhng tone duct 12 was opened mil holding them in that position until thc duct is wloscd.

For exnmplc. when lh.` organ is lirst Startedt :1nd assuming ihfil the lirst tone or Vtones are manual tonesi'only, end'honce 'all contacts o ure 1n engagementY with their respectlve paus of 4contact wires d, d', andall contacts g are out of contact'with their respective pair of contact wires c, c" (neither control duct being open at this time)the opening of any tone duct 12 will complte the circuit through the corresponding magnet 91 whereupon thecorres n -membranes:79 undgSOwill-imme 'ctelyl ocome iniluted,the inflation of membrane 80 to move'lever W7 into such position withfrelation to corresponding'lever 61 that the contact 'e von the letter cannot movolaway from the contact wires-did", and the' inflation of membrane 79l-movirigl its VleverE in such relation to tho-'corresponding lever'58 that thefcontact g 'on theflatr- 'cannot move into bridging contct ='W'ith'contect wires c, c'. 1 Thlsffrelation cfdhe" parts''iszlnmixltained until fthefjtonerdncilis'again closed, even if controlA dnot1,for both control ducts 1 and meanwhilev are 'opened` 4'Accordingly manualitones correspondingo tone ducts 12 whichare open at 'the-time control duct 1, or control ducts Ifend 2, are opened continue uninterrupted until -the .circuits to the corrcspondin magnets 91'lare'broken -by the closing of sai toncducts." It'will be ap parent that the breakin of the Vicircuitslto any magnet 91A results-,in :the changing of the tension of the air'infthe corres nding pair of and to less thi-'aimos lorie, tA usl ati efcorr on 'n air gf membranes 792511 andllowingglithe springs 79 and B0fto become effective to force the levcrsf-and 7.7 out of the aths of the levers 58 `and 61u* Thecontrol ucts are opened in advcnoe ofthe openi ofthe ducts 12 corresponding to tones which they arc to affect andare closed shortly after said tone ducts are opened.

To introduce pedal tones with correspond- 'mg manual tones,duct'1 aloneis 0 ned,the manual mechanism being norma y lo eraf tive as already'stated. he openingo 4the duct will'result in the energizing of magnet .45 and this in turn will'causethe membrane G to be inflated thus moving all the contacts g (except those which are-stopped or bmed by levers 75A corresponding to open tone ducts) into contact withtho wires' c.

If pedal tones are to 'be played' without corresponding manual tones, then duct 2 is opened along with duct 1. The opening of control duct 2 results in the energizing of magnet 45 and this in turn will cause the membrane E to collapse and permit the springs 62 to become effective to move all the contacts e, (except those which are stopped or barred by levers 77 corresponding to open tone ducts 12) out of contact with wires 0, c'.

` It will be noted that the loose engagement between the stems 51 and the several levers imdbetxveen the stems 51l und the several levers -6l, permit relntive movement between thefstems end-levers, respectively,-necessary to theV foregoingV operation and that the springs-59 and 62 exert a-*rcsilient pressure against the' rcspectiverileverswhich is always operative' to 'movelhe contacts e, g, away-from the contact wires except. when overcome-bythe tension oithe uir'in channels N,=O, or. when restrained bv levers -75 or 77.

i lHaving thusl'described the inventionwhat I1 believe to be new and desire to secure by Letters Patent,is:

1551A;-record controlled muslcsl mstrumento'f the kind 'set forth, having tone con nections for e'plurality of scales of toneemitting' elements and nc1uding"a`=^circuit,a. series-fof contact cnrryin levers in the tone connections for each sce e,eech'series heving an operating membrane commonfthereto and elements loosely connecting each lever with theineinbinneeI n series-of pneumatil eallyoperated hlding'levers 'for the contact carrying lcvers, and recordcontrolled means orcontrolling the air tensions 'which control theoperations ofthe membrane and pneumaticnlly 'opernble'holding levers.

" 12.A record controlled musical- 4instrumentof the kind set forth, lia-ving tone connections for a plurality of scales of toneemitting elements and includinfT a. circuit, n series of ,pneume'tically opereble contactcarrying members in the tone connections for each scale, aser-ies of holding levers for each -series ot' contact-carrying members pneumetically-operuble members, connections 'bctween 'said members and levers for transmitting motion from the former to thc latter, said connections being loosely eng red .with the levers, und record contro led means for controlling the air tensions Iwhich control the operations of the contact carrying members and holding levers.

`` 3. "A record controlled inusicnl instru nient of the kind set forth having tone connections for a4 plurality of scales of toneemitting elements und including n circuit; u Series of levers carrying circuit closing means for the tone connections, a membrane for operating the lovers und common to a plurality thereof, and pneumatic means for operating the membranes.

4. A record controlled musical instrui ment of the kind set Jforth having tone-connections for a plurality of scales of tonccmitting elements and including a circuit; :i series of circuit closing levers, an opcriiting membrane or'und common lo n plurality of th'e levers, ineens for controlling the operation of the membranes. *15. A record controlled musical instinm'ent-of the kind sot forth having tone connections fora, pluralityr of scales of toneemitting elements :ind including u. circuitg'e series of circuit closing levers, an operating membrane for and common to a plurality of the leve s, means forcontrolling thev opera.- tcn of the membranes, 'and means in the tone connections forlocking the levers,cor responding to the tone sounded, in operated or uuoperated position.

(5. A record controlled musical instrument of the kind set Vforth having tone connectionslfor a plurality Aof scales of' toneemitting elementsfand including a. circuit; a series o circuit closing levels, an operating membra-ne for and common to a plurality of the levers, means for controlling the operation ofthe'membranes, -and means inthe tone connections for preventing the 'membrune from operating the lever, corresponding to thattone, -aslong as the tone is sounded;

7. A record controlled-musical instrument of 'thefkind se't 'forth having tone'connections for :i` plurality of scales of tone-emitting elements and including` afcir'cuit; a series of circuit closing levers, onefor each tone of each scale, means whereby the levers are operated in one direction, means, ineludinfr a memb1ane,whereby the levers are mov in another direction, record controlled-means for controlling the tensions which control the operation of the membranes.

8. A record controlled musical instrument of the kind set forth having tone connections for :L pluralityof scales of tone-emitting elements und including a circuit;` a series or circuit closing levels, one for each tone of each scale, meansjwhereby the levers are operated in onedirection, means, including` a membrane, whereby the levers ere moved in another direction, record controlled means for controlling the tensions Iv lhch control the operation of the membranes, and means in the tone connections for maintaining in position the levers corresponding to the tone being played, as long as the tone is being played.

9. A record controlled musical instrument of the kind set forth hcving tone connections fora plurality of scales of tone-emittinc elements and including a circuit; a series all circuit closing levers, one for each tone of each scale, means .vhcreby the leveis are operated in one direction, means, including a inembrcne, whereby the levers nre moved in another direction, record controlled means for controlling the tensions which control the operation of the membranes, und locking menus in the tone connections for maintain ing in position the levers corresponding to the notes being sounded, as long as the respective notes continue to be sounded, seid locking: means comprising locking levers, means carried by the levers and engaging the circuit closing levers to lock the seme e,f ,fainstv movement, membranes for operating the locking levers.

iso

-10.`A record controlled musical instrument of the kind set forth having tone connections for u. plurality of scales of toneemitting elements and including e circuit; e series of circuit closingl levers, one for each tone ofeach scale, means whereby the levers :ire operated in one direction, means including u membrane, whereby the levers nre moved in another direction, record controlled means for controlling the tensions which eontrolthc operation of the membranes, looking means in the tone connections for maintaining in position the levers of each scale corresponding to the notes being sounded, as lonp, as the respective notes continue to be sounded, said locking means comprising locking levers, one for euch circuit closing lever, means carried by the levers and engaging the circuit closing levers respectively to lock the some n einst movement, n membrunel for each lodlring lever for operating the same, und means whereby the locking levers of the dili'erent scales, corres onding to the seme note, will be operate simultaneously.

11. A record controlled musical instrument of the liino set forth having tone connections for c plurality of scales of toneemitting elemcnt's und including a. circuit; e series or" circuit closing levers for the tone connections of each scale, membranous menus for operating the levers, loose connections between the membranous means and the levers to transmit motion from the former to the lutter, und pneumatic means for controlling the pressure on seid membrenous means to operate the levers.

12.11 record controlled musical instrument of the kind set forth having tone connections ior e plurality of scales of tonecniitting elements and includinor n circuit; a series of circuit closing levers lor the tone connections ci rech scale, membranous means for operating the levers, loose connections between the mcmbrunous mea-ns and the levers to transmit motion from the former to the lutter` pncnmutic means for controlling the pressure on said membrnnous means to operate the levers, pncumziticolly operated holding lcrcrs ier the circuit closing levers, and n record controllingr means for controlling the nir tension which controls the operations of the ineinbrunous means and pneumnticnlly operated holding levers.

13. A record controlled musical instrument of the hind set forth having tone conner-tions for :i plurnlitir of scales of toneemitting clcnienLs und including n circuit,- e series ol` ciicui closing levers for the tone connections of euch scale, inembrrmous means for oiniciring the levers, connections between the ineinlnnnons menus and the levers, the connections being in position to be moved lnY the nicmbrunous means, the membrnnous nieuns und the last mentioned connections being. mounted so as to, be capable of movement one relative totheother.

14. A record controlled musical instrument of the kind set forth having tone connections for a plurality` of scales of toneemitting elements and including. circuit;

l a. series of circuit closing levers for thetone connections of each ,scale,y membranous means for operating Vthelevers,-connections between the meml'irnnous;fmeans'A and :the levers, the connections being in position to be moved -bythe membrnousfmeans, the membranous means land -rthe lese mentioned connections being mountedsorasto'befcepable of movement ,one relative-tto thee other, record controlled. .devices 'foi'. donirolling? the pressure on the membranous means-and other record, .control-ledpdevicesl for control, ling 2the levers indenendentlv -of the said membrnous means;

l5. A record ,controlled-musical instrument of the kindsetforthliaving-tone connections for :1.l plurality .of ,'sealesoi toneemitting elements and including a circuit; :r series of circuit closing levers for the tone connections of each Scal'e memhranous means ,for operating the levers, connections between the membranons means andthe levers, the connections extending'into the respective levers "and i looselv connected thereto.

16. A record Vcontrolled musiceljnstruf ment of the kindsetforth-hn tone-connections for .u plurality 1i/scales off toneemitting elements and ncludin ajcircuit; a. series'of circnitclosingilevers orgthe tone connections of ceach'. scale, smembranous means for opera leversi-oonnections between the mem ranous means Aand the levers, the connections extending into therespective levers and looselyconnected thereto, and record controlled devices for controllinor the pressure on the membranous means an` other record controlled devioesgfor controlling the levers independently of the said membrnnous means.

17. A record controlled musical instrument of the kind set forth, having tone conA nections for a. plurality of scales of toneemitting elements and includinv e circuit; a series of circuit closing levers lier-'the tone connections of each' scale, membranous means for operating the levers, en element having one end in position-to be operated' by the membranous means and the other end in position to operate the lever.

18. A record controlled musical instrument, of the kind set forth, having tone connections for n plurelity of scales ottoneemitting elements and including a, circuit; a series of circuit closing levers for the. vtone connections of each scale, membranous means for operating the levers,nn element having one end in position to be operated vby the membranons means and theother enclin position to operate the lever, and record controlled devices for controlling the pressure on the mcnibrauous means und other record controlled devices for exercising control over the levers independently' of the scid membranous means.

19. A. record controlled musical instrument of the kind set forth, having tone counections for a plurality of seules of toneemitting elements and including :i` circuit; a series of circuit closing levers for the tone connections of each scale, memhranous means for operating the levers, a longitudinull;r movable element having one end in position to he operated by the membranous means and the other end in position to operate the lever.

20. A record controlled musical instrument of the kind set forth, having tone connections for n pluralityr of seules of toneemittng elements sind includin e circuit; a, series of circuit closing levers or the tone connections of each scale, membranous means for operating the levers, a longitudinally movable element having one end in position to be operated by the membranous means und the other end in position to operate the lever, and record controlled devices for controlling the pressure on the membranous means and other record controlled devices for exercising control over the levers independently of the said membranous means.

21. A record controlled musical instrument of the kind set forth having tone connections for n plurality oi' scales of toneemitting elements and including n circuit; o. series of circuit closing levers for the tone connections ol each scale, pneumatic menus for operating the levers, stems connecting the neumatlc means and the levers for operating the lutter 'from the former, und.1 means for controlling the pressure on the pneumatic means.

22. A record controlled musical instrument of the kind set forth having tone connections for :L pluralit1 of scales of toneemitting elements end including e circuit; a, series of circuit closing levers for the tone connections of each scale, pneumatic means for operating the levers. stems connecting the pneumatic means und the levers for operating the latter from the former, and record controlled devices for controlling;r the pressure on the pneumatic menus and other record controlled devices for controlling the movement of the levers independently of the pneumatic means.

23. A record controlled musical instrument of the kind set forth having tone conneet-.ions for a plurality of scales of toneemitting elements and including a circuit; e series of circuit closing levers for the tone connections of each scale, membranous means for operating the levers, said membranous Ineens being within a tension chamber, means controlling the relative pressure inside and outside of said membranous means.

2t. A record controlled musical instrument of the kind set forth having tone connections for u plurality of scales of tone-emittin elements and including e circuit; a. series o circuit closing levers for the tone connections of each scale, membranous means for operating the levers, seid membranous means bein within a tension chamber, means contro ling the relative pressure inside and outside of said membrenous means, and record controlled devices for interrupting the movement of the levers.

25. A record controlled musical instrument of the kind set forth having tone connections for u plurality of scales of toneemitting elements and including a. circuit. a series of circuit closing devices for the tone connections of each scale, means for operating the devices, means including a membrane for controlling the movement of the devices independent of the operating means.

26. A record controlled musical instrument of the kind set forth having tone connections for a. plurality of scales of toneemitting elements and including a circuit; o series of circuit closing devices for the tone connections of each scale, means for operating the devices, record controlled means, including e membrane, for controlling the movement ofthe devices independent of the operating means.

27. A record controlled musical instrument of the kind described having tone connections for a plurality of scales of toneemitting elements and including a circuit; a box having a tension chest, a. series of circuit closing elements in the tone connections, membranous means for operating the circuit cllosing elements and being within the tension c est.

In testimony whereof I ax my signature.

HEINRICH BOCKISCH. 

